How many days does the moon take to change from new moon to full moon?

Answer 1

The complete cycle of all moon phases is 29.53 days (rounded) on the average,

with small variations depending on the exact interplay between the non-circular

orbits of the earth and moon, which causes relatively small changes in their

speeds along their respective paths.

But those variations aren't really large enough for the casual observer to notice.

For our practical purposes, it's accurate enough to say simply that the time period

from any phase until the same thing shows up again is 29.53 days. (rounded)

Answer 2

Technically, the First Quarter, along with New Moon, Full Moon, and Third Quarter,

are the phases that occur at a single instant in time.

The crescents and the gibbous phases are the ones that last roughly a week each.

Answer 3

A full cycle of the Moon is about 29 1/2 days. From the first to the last quarter is half a cycle, so that would be somewhere around 14 or 15 days. The exact amount varies, due to the fact that the Moon doesn't orbit isn't exactly circular.

Answer 4

It goes new moon, waxing crescent, and then first quarter and each phase lasts 3-4 day so. . . around 12 days?

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Another contributor put it into clearer focus:

The "first quarter" moon occurs after the first quarterof the cycle of phases that comes

after the New Moon. Since the complete cycle of phases takes 29.53 days, the First Quarter

occurs 7.4 days after the New Moon. Call it a week.

Answer 5

It takes the moon 29.5 days to go through all phases, from full moon, back to full moon for example. So from new moon to full moon it will take 14.75 days or 14 days and 18 hours.

Answer 6

Today is June 8, 2010; the next new moon will be in 4 days, in the early monirng of June 12, 2010.

Answer 7

Roughly a week. It's one quarter of 29.531 days. You can do the math.

Answer 8

Any moon phase, including the full one, will repeat 29.53 days later.

Answer 9

That would be 1/2 of the full cycle of "phases" ... an average of 14.77 days. (rounded)

Answer 10

The time between any moon phase and the next occurrence

of the same one is 29.53 days.